prismjs

This plugin enables syntax highlighting for markdown code fences with Prism.js.

This plugin has been integrated into the default theme.

Usage

npm i -D @vuepress/plugin-prismjs@next

.vuepress/config.ts
import { prismjsPlugin } from '@vuepress/plugin-prismjs'

export default {
  plugins: [
    prismjsPlugin({
      // options
    }),
  ],
}

Options

theme

Type: PrismjsTheme
Default: 'nord'
Details: Prism.js theme that will be applied to code blocks.

themes

Type: { light: PrismjsTheme; dark: PrismjsTheme }
Details:
Apply light/dark dual themes.
Note: To use this feature, your theme must set the data-theme="dark" attribute on the <html> tag when dark mode is enabled.

Available Prism.js Light themes

ateliersulphurpool-light
coldark-cold
coy
duotone-light
ghcolors
gruvbox-light
material-light
one-light
vs

Available Prism.js Dark themes

atom-dark
cb
coldark-dark
dark
dracula
duotone-dark
duotone-earth
duotone-forest
duotone-sea
duotone-space
gruvbox-dark
holi
hopscotch
lucario
material-dark
material-oceanic
night-owl
nord
one-dark
pojoaque
shades-of-purple
solarized-dark-atom
tomorrow
vsc-dark-plus
xonokai
z-touch

lineNumbers

Type: boolean | number | 'disable'
Default: true
Details:
- number: The minimum number of lines to enable line numbers.
  For example, if you set it to 4, line numbers will only be enabled when your code block has at least 4 lines of code.
- true: Enable line numbers globally.
- false: Disable line numbers globally.
- 'disable': Completely disable line numbers; :line-numbers will not take effect.
You can add :line-numbers / :no-line-numbers markers in your fenced code blocks to override the value set in config, and customize the beginning number by adding = after :line-numbers. For example, :line-numbers=2 means the line numbers in code blocks will start from 2.

// line-numbers is enabled
const line2 = 'This is line 2'
const line3 = 'This is line 3'

// line-numbers is disabled
const line2 = 'This is line 2'
const line3 = 'This is line 3'

// line-numbers is enabled and starts from 2
const line3 = 'This is line 3'
const line4 = 'This is line 4'

Demo

```ts:line-numbers
// line-numbers is enabled
const line2 = 'This is line 2'
const line3 = 'This is line 3'
```

```ts :no-line-numbers
// line-numbers is disabled
const line2 = 'This is line 2'
const line3 = 'This is line 3'
```

```ts :line-numbers=2
// line-numbers is enabled and starts from 2
const line3 = 'This is line 3'
const line4 = 'This is line 4'
```

highlightLines

Type: boolean
Default: true
Details:
Whether to enable code line highlighting. You can highlight specified lines of your code blocks by adding line range markers in your fenced code blocks:
- Line ranges: {5-8}
- Multiple single lines: {4,7,9}
- Combined: {4,7-13,16,23-27,40}

import { defaultTheme } from '@vuepress/theme-default'
import { defineUserConfig } from 'vuepress'

export default defineUserConfig({
  title: 'Hello, VuePress',

  theme: defaultTheme({
    logo: 'https://vuepress.vuejs.org/images/hero.png',
  }),
})

Demo

```ts {1,7-9}
import { defaultTheme } from '@vuepress/theme-default'
import { defineUserConfig } from 'vuepress'

export default defineUserConfig({
  title: 'Hello, VuePress',

  theme: defaultTheme({
    logo: 'https://vuepress.vuejs.org/images/hero.png',
  }),
})
```

collapsedLines

Type: boolean | number | 'disable'
Default: 'disable'
Details: Default behavior of code block collapsing.
- number: Collapse the code block starting from line number by default. For example, 12 means collapsing the code block starting from line 12.
- true: Equivalent to 15, collapsing the code block starting from line 15 by default.
- false: Add support for code block collapsing, but disable it globally.
- 'disable': Completely disable code block collapsing; :collapsed-lines will not take effect.
To override global settings, you can add the :collapsed-lines / :no-collapsed-lines markers to the code block. You can also add = after :collapsed-lines to customize the starting line number being collapsed. For example, :collapsed-lines=12 means collapsing the code block starting from line 12.

html {
  margin: 0;
  background: black;
  height: 100%;
}

body {
  margin: 0;
  width: 100%;
  height: inherit;
}

/* the three main rows going down the page */

body > div {
  height: 25%;
}

.thumb {
  float: left;
  width: 25%;
  height: 100%;
  object-fit: cover;
}

.main {
  display: none;
}

html {
  margin: 0;
  background: black;
  height: 100%;
}

body {
  margin: 0;
  width: 100%;
  height: inherit;
}

/* the three main rows going down the page */

body > div {
  height: 25%;
}

.thumb {
  float: left;
  width: 25%;
  height: 100%;
  object-fit: cover;
}

.main {
  display: none;
}

html {
  margin: 0;
  background: black;
  height: 100%;
}

body {
  margin: 0;
  width: 100%;
  height: inherit;
}

/* the three main rows going down the page */

body > div {
  height: 25%;
}

.thumb {
  float: left;
  width: 25%;
  height: 100%;
  object-fit: cover;
}

.main {
  display: none;
}

Demo

<!-- Collapsed by default starting from line 15 -->

```css :collapsed-lines
html {
  margin: 0;
  background: black;
  height: 100%;
}

body {
  margin: 0;
  width: 100%;
  height: inherit;
}

/* the three main rows going down the page */

body > div {
  height: 25%;
}

.thumb {
  float: left;
  width: 25%;
  height: 100%;
  object-fit: cover;
}

.main {
  display: none;
}
```

<!-- Disabled collapsed -->

```css :no-collapsed-lines
html {
  margin: 0;
  background: black;
  height: 100%;
}

body {
  margin: 0;
  width: 100%;
  height: inherit;
}

/* the three main rows going down the page */

body > div {
  height: 25%;
}

.thumb {
  float: left;
  width: 25%;
  height: 100%;
  object-fit: cover;
}

.main {
  display: none;
}
```

<!-- Collapsed starting from line 10 -->

```css :collapsed-lines=10
html {
  margin: 0;
  background: black;
  height: 100%;
}

body {
  margin: 0;
  width: 100%;
  height: inherit;
}

/* the three main rows going down the page */

body > div {
  height: 25%;
}

.thumb {
  float: left;
  width: 25%;
  height: 100%;
  object-fit: cover;
}

.main {
  display: none;
}
```

codeBlockTitle

Type: boolean | CodeBlockTitleRender

type CodeBlockTitleRender = (title: string, code: string) => string

Default: true
Details: Whether to enable code block title rendering. Add title="Title" after the code block ``` to set the title.
Pass CodeBlockTitleRender to customize the title rendering.

Example:

foo/baz.js
console.log('hello')

Demo

```ts title="foo/baz.js"
console.log('hello')
```

Tips

In the new version, some functionalities similar to shiki have been implemented, allowing you to style code blocks using the same syntax.

notationDiff

Type: boolean
Default: false
Details: Whether to enable notation diff.

Example:

console.log('hewwo') 
console.log('hello') 
console.log('goodbye')

```ts
console.log('hewwo') // [!code --]
console.log('hello') // [!code ++]
console.log('goodbye')
```

Also see:
- Shiki > Notation Diff

notationFocus

Type: boolean
Default: false
Details: Whether to enable notation focus.

Example:

console.log('Not focused')
console.log('Focused') 
console.log('Not focused')

```ts
console.log('Not focused')
console.log('Focused') // [!code focus]
console.log('Not focused')
```

Also see:
- Shiki > Notation Focus

notationHighlight

Type: boolean
Default: false
Details: Whether to enable notation highlight.

Example:

console.log('Not highlighted')
console.log('Highlighted') 
console.log('Not highlighted')

```ts
console.log('Not highlighted')
console.log('Highlighted') // [!code highlight]
console.log('Not highlighted')
```

Also see:
- Shiki > Notation Highlight

notationErrorLevel

Type: boolean
Default: false
Details: Whether to enable notation error level.

Example:

console.log('No errors or warnings')
console.warn('Warning') 
console.error('Error')

```ts
console.log('No errors or warnings')
console.warn('Warning') // [!code warning]
console.error('Error') // [!code error]
```

Also see:
- Shiki > Notation Error Level

notationWordHighlight

Type: boolean
Default: false
Details: Whether to enable notation word highlight.
Word highlight must be written on a separate line.

Example:

Highlight words with comments

const message = 'Hello World'
console.log(message) // prints Hello World

```ts
// [!code word:Hello]
const message = 'Hello World'
console.log(message) // prints Hello World
```

Highlight words based on the meta string provided on the code snippet

const msg = 'Hello World'
console.log(msg) // prints Hello World

Demo

```js /Hello/
const msg = 'Hello World'
console.log(msg) // prints Hello World
```

Also see:
- Shiki > Notation Word Highlight

whitespace

Type: boolean | 'all' | 'boundary' | 'trailing'
Default: false
Details: Whether to enable whitespace characters (Space and Tab).
- true: Enable whitespace, but not render any whitespace by default.
- false: Completely disable whitespace rendering; :whitespace will not take effect.
- 'all': Render all whitespace.
- 'boundary': Render leading and trailing whitespace of the line.
- 'trailing': Render trailing whitespace of the line.
You can add :whitespace / :no-whitespace markers in your fenced code blocks to override the value set in config, and customize the render type by adding = after :whitespace. For example, :whitespace=boundary will render leading and trailing whitespace of the line.

Example:

<!-- render all whitespace -->

A text  
with trailing spaces

    indented text

<!-- render leading and trailing whitespace of the line -->

A text  
with trailing spaces

    indented text

<!-- render trailing whitespace of the line -->

A text  
with trailing spaces

    indented text

<!-- disable render whitespace -->

A text  
with trailing spaces

    indented text

Demo

```md :whitespace
<!-- render all whitespace -->

A text  
with trailing spaces

    indented text
```

```md :whitespace=boundary
<!-- render leading and trailing whitespace of the line -->

A text  
with trailing spaces

    indented text
```

```md :whitespace=trailing
<!-- render trailing whitespace of the line -->

A text  
with trailing spaces

    indented text
```

```md :no-whitespace
<!-- disable render whitespace -->

A text  
with trailing spaces

    indented text
```

Also see:
- Shiki > Render Whitespace

preloadLanguages

Type: string[]
Default: ['markdown', 'jsdoc', 'yaml']
Details:
Languages to preload.
By default, languages will be loaded on demand when parsing markdown files.
However, Prism.js has some potential issues about loading languages dynamically. To avoid them, you can preload languages via this option.

preWrapper

Type: boolean
Default: true
Details:
Whether to add an extra wrapper outside the <pre> tag.
The wrapper is required by lineNumbers and collapsedLines. This means if you disable preWrapper, the line numbers and collapsed lines will also be disabled.
Tips
You can disable it if you want to implement them on the client side. For example, Prismjs Line Highlight or Prismjs Line Numbers.